Answer:
d
many people and groups protested for social change
Major allied powers lose 1349000 troops than the major central powers.
Explanation:
During world war I various countries lost major allied powers than the major central powers like Russia lost maximum number of troops. Millions of soldiers were killed and injured in world war I. Central power authority signed a treaty with allied power for getting soldiers at right time.
Among all the European countries Germany had maximum number of centralized force. Russia lost highest number of troops in world war I. By combining two to three countries on the basis of their strategic location central power is formed.
The answer is “B: by preserving the nations forest “
